Imagine a world in which every single human being can freely share in the sum of all knowledge.

The non-profit Wikimedia Foundation provides the essential infrastructure for free knowledge. We host Wikipedia, the free online encyclopedia, created and edited by volunteers around the world, as well as many other vital community projects. We welcome anyone who shares our vision to join us in collecting and sharing knowledge that fully represents human diversity.

Research

We conduct our own research and partner with researchers worldwide to address change in society and technology.

Advocacy

NEWS —

See what we have been up to

For almost a decade, the Wikimedia Foundation’s Community Resources team has been funding people and organizations pursuing our vision: Imagine a world in which every single human being can freely share in the sum of all knowledge. In the last five years alone, we’ve given out over 35 million US dollars across almost 80 countries. Our efforts….

In an attempt to harmonize copyrights for the use of sound recordings created before 1972, the U.S. Senate is currently poised to pass a bill which could endanger the preservation and sharing of historical sound recordings online. The Music Modernization Act (MMA), which was passed in the House of Representatives in April and recently received….

Projects —

Collaborative projects are the core of the Wikimedia movement.

Our volunteers build tools, share photos, write articles, and are working to connect all the knowledge that exists.

PARTICIPATE — Profiles

Wikimedians are heroes of free knowledge.

Throughout history, knowledge has been controlled by a powerful few. Wikipedia needs knowledge from all languages and cultures. The internet has become the default for accessing information—women, people of color, and the global south remain underrepresented. We invite you to help correct history.

People like you keep Wikipedia accurate

Wikipedia articles are collaboratively created and edited by a community of volunteers using reliable sources. Readers verify the facts. No single person or company owns a Wikipedia article. We cannot change a Wikipedia article about you, but others can help.

Not all wikis are Wikimedia

The word “wiki” refers to a website built using collaborative editing software. Hundreds of organizations and projects with no affiliation with Wikipedia or the Wikimedia Foundation also use the term, including wikiHow and WikiEducator.

Wikimedia has nothing to do with Wikileaks and never did. Although both use the term “wiki” in their name, they have always been completely separate and unaffiliated.

Help us unlock the world’s knowledge.

As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.